4.6.1 Email Bounce Error Reason Message Content Or Attachment Not Supported: Delayed Message The email message has not yet been…

4.6.0 Email Bounce Error Reason Unknown Issue With The Message Content: Delayed Message The email message has not yet been…

4.5.6 Email Bounce Error Reason Messaging Command In Transmission Too Long: Delayed Message The email message has not yet been…

4.5.4 Email Bounce Error Reason Email System Sent Bad Command: Delayed Message The email message has not yet been delivered…

4.5.5 Email Bounce Error Reason Email Systems Were Incompatible: Delayed Message The email message has not yet been delivered because…

4.5.3 Email Bounce Error Reason Too Many Recipients For Message: Delayed Message The email message has not yet been delivered…

4.5.2 Email Bounce Error Reason Email System Sent Bad Command: Delayed Message The email message has not yet been delivered…

4.5.1 Email Bounce Error Reason Bad Messaging Command In Transmission: Delayed Message The email message has not yet been delivered…

4.5.0 Email Bounce Error Reason Unknown Issue With Your Email Server: Delayed Message The email message has not yet been…

4.4.7 Email Bounce Error Reason Message Expired Before Delivery Completed: Delayed Message The email message has not yet been delivered…